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Finding the Fourth Proportional to 69,893.36, 104,885.40 and 30,475.52

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Solution

The fourth proportional to 69,893.36, 104,885.40 and 30,475.52 is: 45,733.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,893.36 : 104,885.40 = 30,475.52 : x
  2. Step 2: Convert to fraction form
    69,893.36/104,885.40 = 30,475.52/x
  3. Step 3: Cross multiply
    69,893.36x = 104,885.40 × 30,475.52
  4. Step 4: Simplify right side
    69,893.36x = 3,196,437,105.41
  5. Step 5: Solve for x
    x = 3,196,437,105.41/69,893.36
  6. Step 6: Final answer
    x = 45,733.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.